Calculators
Quick utilities for everyday calculations.
Unit converter
Convert technical units with strong validation.
PDF to images
Convert PDFs into images and download a ZIP.
Percentages
Rule of three and percent calculations.
Web structures
2D modeling and analysis with interactive results.
Structures
Fast beam simulator with shear, moment and deflection.
Triangle calculator
Solve sides, angles, and area quickly.
Circle calculator
Area, perimeter, and diameter.
Rectangle calculator
Area, perimeter, and diagonal.
Regular polygons
Area, perimeter, and apothem.
Combo 3D
3D shapes with area and volume.
Amplifiers
BJT and JFET with gain, bias, and small signal.
Basic calculator
Basic operations.
Scientific calculator
Advanced functions.
Binary calculator
Base-2 operations.